摘要
为研究地处地震动峰值加速度达到0.4 g地区的高路堤的稳定性,文中以云南某高速公路为例,采用极限平衡法,设置对比实验组,以稳定性系数F_(s)为表征,定量研究在边坡高度、填方坡比、路基加筋影响下的高路堤边坡稳定性。结果表明,边坡坡率对填方稳定性的影响程度最大(F_(s)=1.05~1.29),路基加筋次之(F_(s)=1.04~1.17),在填方体填筑质量有保障的情况下,填方高度的影响最小(F_(s)=0.99~1.08)。
In order to study the stability of high embankment in the area where the peak ground motion acceleration reaches 0.4 g,taking a highway in Yunnan Province as example,the limit equilibrium method is adopted.By setting up comparative experimental groups,the factor of safety(F_(s))is taken as the reflection to quantitatively study the stability of high embankment slope under the influence of slope height,slope ratio and subgrade reinforcement.The results show that the slope ratio has the greatest influence on the stability of fill with the value of F_(s) between 1.05 and 1.29,followed by the reinforcement of subgrade with the value of F_(s) between 1.04 and 1.17,and the height of fill has the least impact with the value of F_(s) between 0.99 and 1.08,when the quality of fill could be guaranteed.
作者
马康
彭小勇
蒲春林
MA Kang;PENG Xiaoyong;PU Chunlin(Guizhou Transportation Planning Survey and Design Academe Corporation Limited, Guiyang 550081, China)
出处
《交通科技》
2022年第1期38-41,共4页
Transportation Science & Technology
关键词
岩土工程
高地震烈度
高填方
稳定性分析
极限平衡法
geotechnical engineering
high seismic intensity area
high embankment
stability analysis
limit equilibrium method
